发明申请
- 专利标题： System and Method for Channel Information Feedback in a Wireless Communications System
- 专利标题（中）： 无线通信系统中信道反馈的系统和方法
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申请号： US12722450申请日： 2010-03-11
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公开(公告)号： US20100232525A1公开(公告)日： 2010-09-16
- 发明人: Pengfei Xia , Yang Tang , Zhigang Rong , Linhong Chen
- 申请人： Pengfei Xia , Yang Tang , Zhigang Rong , Linhong Chen
- 申请人地址： US TX Plano
- 专利权人： FutureWei Technologies, Inc.
- 当前专利权人： FutureWei Technologies, Inc.
- 当前专利权人地址： US TX Plano
- 主分类号： H04L27/00
- IPC分类号： H04L27/00
摘要：
A system and method for channel information feedback in a wireless communications system is provided. A method for communications device operation includes receiving a pilot transmitted by a controller, computing a channel estimate for a channel between the controller and a communications device, the computing based on the pilot, computing a channel correlation matrix for the channel based on the channel estimate, and transmitting a reduced rank representation of the channel correlation matrix to the controller as a first feedback information. The method also includes adapting a first codebook based on the reduced rank representation of the channel correlation matrix, computing a representation of the channel using the adapted codebook, transmitting the representation of the channel as a second feedback information, and receiving a transmission beamformed based on the first feedback information and the second feedback information
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